
Code Whisper
@codewhisperdev
👾 Anonymous engineer, sharing thoughts on code, tech & systems. 🚫 No face, just logic.
.NET 9 introduces the new LINQ method CountBy. It allows for calculating the frequency of a key. This improvement looks nice. What do you think?

LINQ Tip: Use ToList() after filtering, not before. Why? 🔹 First version loads everything into memory before filtering 🔹 Second version filters at source, better for DB or large collections 🔹 Especially important when using EF Core or APIs with IQueryable #charp #dotnet

🔹 What is Queue<T>? Queue<T> is a First-In-First-Out (FIFO) collection in C#. It means the first item you add is the first one to be removed. When to use? - Task scheduling - Print jobs - Message handling - Breadth-first search (BFS) in graphs Example:

SQL Tip: Always monitor and maintain your indexes. Unused or duplicate indexes = slower writes and wasted space. Why? - Clean indexes = faster inserts/updates - Less I/O, better performance 🔍 Use this to find unused indexes in SQL Server

United States 趋势
- 1. #AEWWrestleDream 65.4K posts
- 2. sabrina 60.4K posts
- 3. Stanford 8,037 posts
- 4. Darby 10.7K posts
- 5. #byucpl N/A
- 6. Mizzou 6,063 posts
- 7. Hugh Freeze 2,902 posts
- 8. Lincoln Riley 2,720 posts
- 9. Norvell 2,311 posts
- 10. Utah 31.7K posts
- 11. Kentucky 25.3K posts
- 12. Bama 16.1K posts
- 13. Arch 26.1K posts
- 14. Stoops 4,989 posts
- 15. Castellanos 3,674 posts
- 16. Nobody's Son 2,080 posts
- 17. #RollTide 9,074 posts
- 18. Florida State 8,403 posts
- 19. Sark 4,572 posts
- 20. Notre Dame 16.7K posts
Something went wrong.
Something went wrong.